Spark plug and engine cooler



F. B. QTTOFY SPARK PLUG AND ENGINE COOLER April 1 1941.

Filed Dec. 9, 1938 FIG/l FIG 4 FIG-'3 FIG 2 INVENTOR. V fi%% PatentedApr. 1, 1 941 2,236,762 SPARK PLUG AND ENGINE COOLER Frank B. Ottofy,st. Louis, Mo. Application December 9, 1938, Serial No. 244,746

6 Claims.

My invention relates to means for cooling spark plugs and engine metaladjacent the spark plugs,

and the invention is applicable to either air cooled or water cooledengines.

The object of my invention is to improve the performance of internalcombustion engines by rapidly dissipating the heat at each spark plugand the engine metal adjacent each sparkplug,

.A further object of the invention is to provide a plurality of metallicbaiiies, varying in size toward the rear of an engine, and they projectupwardly and lean forwardly from eachspark plug, and are of such shapeas to provide an anterior cavity interrupted by a lower opening andopposed cut-away portions on opposite sides of the opening so that airmoving toward the rear of the engine will be concentrated and laterallyscooped downwardly with equal amounts passing through the opening ineachbaille and the cutaway portions for cooling each spark plug and adjacentengine metal.

With the above and other objects in view, the invention consists in thenovel features of construction, arrangement and combination of parts,hereinafter more fully described and finally pointed out in the claimshereto appended.

Referring to the drawing:

Fig. 1 is a side elevation of the upper pasti- Position front an engineshowing the baflies in of a plurality of spark plugs in line.

end, as will be apparent from Fig. 4. The anterior cavity 2 of eachbailie I is interrupted by a suitable opening I in the lower end, andthe lower edge of the body of each baille is cut-away,

'be clamped in position against displacement Fig. 2 is a perspectiveview, looking from above;

of one of the metallic baflles.

Fig. 3 is a perspective view of one of the baflles.

Fig. 4 is a perspective view of one of the bailies. Referring to thedrawing, the reference charas at 5, on Opposite sides of the lower endof the opening 3, as clearly shown in Figs. 2'and 3.

A suitable ear I' provided with an opening 6 projects rearwardly fromthe lower edge of the body of each baflle I, as clearly shown in Figs. 2and 3. The ear I is disposed at an obtuse angle to the longitudinal axisof the body-of each baiiie I, so that when each baiiie I is supported inposition in advance of its respective spark plug 4, the body memberhaving the anterior cavity will proiect upwardly and lean forwardly inadvance of the spark plug 4, as will be apparent from Fig. 1. Eachbaiile I is held in position between the spark plug and the engine headas the screw threaded nipple of a spark plug is adapted to pass throughthe ear opening I so that when the spark plug has been moved to homeposition, the bane will thereof relative to the spark plug. When abaflie I has been clamped in position on the engine head, it will beapparent from Fig. 1, that an air space will be provided between theengine head and the edges of the cut-away portions 5 at the lower end ofthe baflle I on opposite sides of the lower end of the opening 3.

In view of the fact that each baflle' I when employed on an engine, inline, as shown in Fig. 1, is of'a different size, that is in'heighit andwidth, each baflle toward the rear of the engine is progressivelygreater in height and in width.

acter A designates the upper portion of an engine. block, and Bdesignatesthe engine head.

A plurality of spark plugs, in line, are each A designated 4, as shownin Fig. i. The spark plugs 4 are securedin position on the engine head Bin the usual well known manner.

In carrying out the invention, it is my aim to provide each spark plug 4carried by the engine head B with a metallic bailie designated,generally,.as I. g

Where there are a plurality of spark plugs 4 employed, in line, as shownin Fig. 1, the baflles I associated therewith vary in size such, forinstance in height and width, for each spark plug 4 toward the rear ofthe engine.

Each metallic bailie I employed comprises a suitable metallic bodymember having a transversely curved front and rear surface having theupper end thereof arcuateiy shaped, to provide an anterior cavity 2which is openat its lower so that the preceding bailie I, in line, willnot completely obstruct the next baflle in line, but will allow movingair above and to the sides of the first bailie, in line to be caught bythe second baflie in line, and likewise on down the line. Each bail'ie itoward the engine being greaterin height and width, each baiile becomesprogressively greater in size so that air moving toward the rear of theengine will scooped downwardly in the anterior cavity 2 of each banie,and like amounts will pass through the opening 3 in each baflle anddirectly pass over each spark plug to cool the same, and an additionalside stream of air will pass rearwardly through "the cut-away portions 5of the baiiies to cool engine metal adjacent the spark plugs 4..

The many advantages of the herein described invention will readilysuggest themselves to those skilled in the art to which it appertains,

be concentrated and disclosed, but it is to be understood that I do notdesire to restrict, or limit myself to the very details of theconstruction shown and described, which is merely illustrative, it beingobvious that changes, not involving the exercise of invention, may bemade without conflicting or departing from the spirit of the inventionwithin the scope of the appended claims.

I claim:

1. In an engine having a plurality of spark plugs in line, thecombination therewith of metallic ballles each held in position by andin front of each spark plug and each having forward leaning curvedsurfaces with an anterior cavity interrupted by a lower opening, theheight of said baflles varying upwardly toward the rear of said engine,that air moving toward the rear of the engine will be concentrated andscooped downwardly in equal amounts for cooling each spark plug.

2. In an engine having a plurality of spark plugs in line, thecombination therewith of metallic baflies each held in place by and infront of each plug and with forward leaning curved surfaces having ananterior cavity interrupted by a lower opening, the height and width ofsaid baliles varying upwardly and laterally toward the rear of theengine, that air moving toward the rear of the engine will beconcentrated and scooped downwardly passing openingin each bafile inequal amounts for cooling each plug, and the lower corner portions ofthe metallic bafiies being cut-away that air not passing through theopening in each baflle will through the lower pass under the cut-awaycorner portions of the baiile for cooling metal parts of the engineadjacent the spark plugs.

3. A spark bafile comprising a sheet metal apertured base, a memberprojecting upwardly and leaning forwardly from said base having curvedsurfaces, and an anterior cavity interrupted by a lower opening.

4. A spark plug bafile as defined in claim 3, wherein the lower edgeportions of the upwardly projecting and forwardly leaning member iscutaway on opposite sides of the lower opening.

5. In an engine having a plurality of spark plugs in line, thecombination therewith of metallic baflles each held in place by and infront of .each plug and with forwardly leaning curved surfaces having ananterior cavity interrupted by a lower opening, the height and width ofsaid baflies varying upwardly and laterally toward the rear of theengine so as to become progressively greater in size, that air movingtoward the rear of the engine will be concentrated and scoopeddownwardly for delivery in equal amounts through the lower opening inthe baflles for cooling each plug 6. In metallic baffles as defined inclaim 5, wherein the lower corner portions of the baflies are cut-awayon opposite sides of the lower opening, that air concentrated andscooped downwardly and not passing through the lower opening in eachbaille will be delivered under the cutaway corner portions of thebaflles for dissipating heat from metal engine parts adjacent each plug.

' FRANK B. O'ITOFY.

